Page 325 - 2022-23 Auto Performance Open Wheel Catalog

RPM Series Crate Motor
“Cheater” Valve Springs
Designed specifically for popular GM “602” and “604” crate motors, RPM series valve springs permit increased engine RPM's compared to stock GM crate motor springs. Sold in sets of 16.
Valve Locks
Choose from 7°, 8°, or 10° valve locks for 11/32", 3/8", or 8mm valves. Sold in sets of 16.
Part No.
Valve Stem Size
Lock Groove Angle Type
Installed Height
Material
PACPAC-L8005
11/32"
10°
Square
Std.
Titanium
PACPAC-L8025
11/32"
10°
Square
+.050"
Steel
PACPAC-L8028
11/32"
10°
Square
+.050"
Steel
PACPAC-L8036
11/32"
8°
Square
Std.
Steel
PACPAC-L8038
11/32"
8°
Square
+.050"
Steel
PACPAC-L8092
3/8"
10°
Square
Std.
Steel
PACPAC-L8131 **
11/32"
8°
Radius
Std.
Steel
PACPAC-L8132 **
11/32"
8°
Radius
+.050"
Steel
PACPAC-L8133 **
11/32"
8°
Square
Std.
Steel
PACPAC-L8134 **
11/32"
8°
Square
+.050"
Steel
PACPAC-L8142 **
8mm
8°
Radius
+.050"
Steel
PACPAC-L8143 **
8mm
8°
Radius
-.050"
Steel
PACPAC-L8146
11/32"
7°
Square
Std.
Steel
PACPAC-L8154
11/32"
7°
Radius
Std.
Steel
PACPAC-L8160
8mm
10°
Radius
Std.
Steel
PACPAC-LR8025 †
11/32"
10°
Square
-.050"
Steel
PACPAC-LR8027 †
11/32"
10°
Square
Std.
Steel
PACPAC-LR8028 †
11/32"
10°
Radius
Std.
Steel
Installed Open Part No. O.D. I.D. Height Load
Valve Spring Retainers
Offered in 600 series Pacaloy tool steel or lightweight 500 series Ti-17 titanium.
Spring Rate
Coil Max Bind Lift
“602” Spring
PACPAC-1210X
1.245"
.891"
87 @ 1.700"
212 @ 1.270"
291
1.128"
.450"
“604” Spring
PACPAC-1212X
1.355"
.910"
125 @ 1.750"
315 @ 1.250"
380
1.180"
.550"
D BC A
Part No.
Dimensions
A B C
D
Lock Gram Angle Weight
300 Series Chrome Moly Steel
PACPAC-R317
1.325"
.990"
.700"
N/A
10°
26.3
PACPAC-R335
1.300"
.940"
.680"
N/A
LS7
17.0
PACPAC-R348
1.360"
.985"
.690"
N/A
Mini 8°
17.0
PACPAC-R349
1.200"
.775"
N/A
N/A
8°
20.0
PACPAC-R387
1.450"
1.122"
.735"
N/A
10°
29.0
400 Series Ti-64 Titanium
PACPAC-R436
1.450"
1.125"
.800"
N/A
10°
11.5
500 Series Ti-17 Titanium
PACPAC-R505
1.400"
1.090"
.780"
N/A
10°
14.8
PACPAC-R514
1.475"
1.140"
.735"
N/A
10°
14.8
PACPAC-R540
1.400"
1.080"
.770"
N/A
8°
13.6
600 Series Pacaloy Tool Steel
PACPAC-R614
1.450"
1.140"
.735"
N/A
10°
15.9
PACPAC-R632
1.250"
.890"
.600"
N/A
Mini 8°
N/A
** Mini-8 Lock Type † Locks are recessed for use with lash caps.
Chrome Moly Spring Seats
Part No. Thickness A B
Spring Installed Height Gauge
PACPAC-T902
Measure valve spring heights quickly, accurately, and effectively. Standard model is made from durable stainless steel and includes fine threads for increased accuracy. Measures 1.800"- 2.600" installed heights.
C
A B C
Dimensions
PACPAC-S102
.060"
1.550"
.855"
.635"
PACPAC-S103
.060"
1.550"
.770"
.575"
PACPAC-S106
.060"
1.550"
.700"
.635"
PACPAC-S110
.060"
1.500"
.715"
.570"
PACPAC-S114
.060"
1.450"
.700"
.570"
PACPAC-S117
.060"
1.550"
.730"
.575"
PACPAC-S126
.060"
1.500"
.715"
.630"
PACPAC-S138
.060"
1.270"
.615"
N/A
Valve Spring Shims NEW! Offered in chrome moly steel, Pacaloy
tool steel, Ti-64 titanium or Ti-17 titani- um. Sold in sets of 16.
Part No. O.D. I.D.
Valve Spring Shim Kit
PACPAC-KS93 NEW!
Used to achieve the desired valve
spring installed height and seat pres- sure, comprehensive kit includes (64) 1.250" O.D. x .570" I.D. valve spring shims, 16 pieces each in thicknesses of .015", .020", .030", and .050".
Thickness
PACPAC-S184
1.500"
.570"
.050"
PACPAC-S188
1.250"
.570"
.050"
PACPAC-S189
1.250"
.570"
.030"
2022-23 PARTS AND ACCESSORIES
323
Thomas Meseraull
Mike Reusche